YouTube RSS feed generator (com.vsubhash.js.youtube-rss-feed-generator) is a User Script for Youtube that will automatically detect the RSS feed of a channel and add an RSS icon next to the channel name. It also makes the browser aware of the RSS feed causing it to activate the RSS toolbar bar button. This script can be installed in Firfox brows…

com.vsubhash.js.youtube-rss-feed-generator

// ==UserScript==
// @name        YouTube RSS feed generator
// @namespace   com.vsubhash.js.youtube-rss-feed-generator
// @description Adds a RSS feed button to YouTube channels
// @include     https://www.youtube.com/watch*
// @version     2018
// @grant       none
// ==/UserScript==

document.addEventListener("DOMContentLoaded", startItDelayed, false);
 
function startItDelayed() {
  if (document.getElementById("YT_RSS_Feed") == null) {
    window.setTimeout(addRssButton, 6*1000);    
  }  
}

function addRssButton() { 
  console.log("Executing YouTube RSS feed generator")
  var oDivs = document.getElementsByTagName("div");
  if ((oDivs != null) && (oDivs.length > 0)) {
    
    for (var i = 0; i < oDivs.length; i++) { if (oDivs[i].className == "yt-user-info") { 
      //console.log("YRFG Error: Here"); 
      var oAnchors = oDivs[i].getElementsByTagName("a"); if ((oAnchors != null) && (oDivs.length>1)) {
          var bFound = false;
          for (var j = 0; j < oAnchors.length; j++) {
            //console.log("YRFG Error: " + oAnchors[j].href.substring(0, "https://www.youtube.com/channel/".length));
            if (oAnchors[j].href.substring(0, "https://www.youtube.com/channel/".length) == "https://www.youtube.com/channel/") {
              var sChannelId = oAnchors[j].href.substring("https://www.youtube.com/channel/".length);
              
              var oRssElement = document.createElement("a");
              oRssElement.id = "YT_RSS_Feed";
              oRssElement.href = "https://www.youtube.com/feeds/videos.xml?channel_id=" + sChannelId;
              oRssElement.innerHTML = "<img src=\"https://www.google.com/images/rss.png\" style=\"margin: auto 1em; \" />";
              oAnchors[j].appendChild(oRssElement);
              
              var oLinkElement = document.createElement("link");
              oLinkElement.setAttribute("rel", "alternate");
              oLinkElement.setAttribute("title", oAnchors[j].textContent);
              oLinkElement.setAttribute("type", "application/rss+xml");
              oLinkElement.setAttribute("href", "https://www.youtube.com/feeds/videos.xml?channel_id=" + sChannelId);
              document.getElementsByTagName("head")[0].appendChild(oLinkElement);
              
              bFound = true;
              break;
            }
          }
          if (bFound) { break; }
        }
      }
    }
  }
}